Just downloaded. Loving the game so far! The concept works out really well and it's a lot of fun.
However, I will mention a few things that could be improved:
1. The ads. There are simply too many. This is mainly a problem when you're dying a bunch of times in quick succession. Perhaps you could base the frequency of ads on time instead, and only show them after the player has just died or completed a level. It's annoying when one shows up right as you start moving.
2. The hitbox on the ground spikes is too large. Often I get spiked when it looks like I'm not even touching them.
3. I would like to be able to move the aim arrow just a bit faster, but maybe that's just me.
But again, amazing game, and congrats on the feature!
P.S. I'm curious about that beautiful banner feature. Does Apple ask you for banner artwork in advance of the release?